Means for imparting gyratory motion to sieve-boxes and other bodies.



No. 844,005. PATENTED EEB. I2, 1907. E. R. DRAVER.

RY MOTION TO SIEVE BOXES AND OfIHEB.

BODIES.

APPLICATION FILED SEPT.17,1906.

MEANS FOR IMPARTING GYRATO 4 SHEETS-SHEET 1.

TH: Nomzls Fergus cu., wsumcmn. D. c.

No. 844,005. EATENTED EEB. 12, 1907.

E. R. DRAVER. MEANS EOR IMPARTING OYRATORY MOTION TO SIEVE BOXES AND OTHER BODIES.

APPLICATION FILED SEPT. 17, 1906.-

4 SHEETS-SHEET 2.

PATENTBD FEB.12, 1907.

E. E. DEAVEE. MEANS EOE MEAETING GYEATUEY MuTloN To SIEVE BOXES AND OTEEE BODIES.-

AEELIGATION FILED SEPT. 17,1906.

4 SHEETS-SHEET 3.

1HE NoRRrs PETERS co, wasmrmrmv, n. c4

No. 844,005. PATENTED FEB. 12, 1907.

A E. E. BEAVER.

MEANS EOE IMPAETING OYEATOEY MOTION TO SIEVE BOXES AND OTHER BODIES.

APPLICATION FILED 8BPT.17,1906.

4 SHEETS-SHEET 4. fag f.

pas NoRR/s PETERS ca., wAsHlNc'roN, n. c

UNITED @TAOTIS PATENT FFIGI'.

EMIL It. DRAVER, 0F RICHMOND, INDIANA.

MEANS FOR IMPARTING GYRATORY MOTION TO SIEVE-BOXES AND OTHER BODIES.

Specification of'Letters atent.

Patented Feb. 12, 1907.

Application led September 17, 1906. Serial No. 334,922.

Be it known that I, EMIL R. DRAVER, a citizen of the United States, residing at Richmond, in the county of Wayne and State of Indiana, have invented certain new and useful Improvements in Means for Imparting Gyratory Motion to Sieve-Boxes and other Bodies, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has for its obj ect to provide an improved means for imparting gyratory motion to sieve-boxes and other movable bodies; and to this end the invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

Heretofore sieve-boxes which have been freely suspended or supported have been given gyratory motions by means of rotating shafts having unbalanced or offset Weights. Also it has been proposed to arrange these sieveboxes in rigidly connected diagonally disposed pairs and to gyrate the same by a centrally-disposed crank-shaft; but in such proposed construction no means has been provided for positively holding` the relatively movable sieve-boxes paralle with respect to each other.

My invention will be best understood by the illustration of the manner in which I connect and operate a pair of sieve-boxes for simultaneous movements in the opposite direction and at all times hold the same parallel. rIhis arrangement is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a View in end elevation illustrating my invention applied to a pair of sieve-boxes, some parts being sectioned. Fig. 2 is a vertical section taken approximately on the line mi r2 of Fig. 1. Fig. 3 is a detail in elevation illustrating a modified construction for supporting the crank-shaft which produces the gyratory motions of the sieve-boxes shown in Figs. 1 and 2. Fig. 4 is a view corresponding to Fig. l, but illustrating a modified construction of the means for gyrating the sieveboxes and connecting the same for parallel movements and Fig. 5 is a vertical section 4, some parts being broken away.

The numerals 1 and 2 indicate, respectively, the lower and upper lioor of a mill or other structure in which the sieve-boxes and connections thereto are installed.

The sieve-boxes, which are indicated by the numeral 3, are each suspended from the upper floor 2 by groups of resilient rods 4, the

l upper ends of which, as shown, are secured l to the said upper floor by brackets 5 and the I taken approximately on the line :105 x5 of Fig.

lower ends of which are secured to the ends of the said sieve-boxes by means of keeperbrackets 6. The two sieve-boxes are thus i freely suspended at the same or approxij mately the same elevation and extend pari allel the one with respect to the other.

I Referring now to Figs. 1 and 2, the numeral 7 indicates a vertically-disposed crank-shaft, which is preferably formed with three cranks,

j the intermediate of which projects in one direction and the upper and lower of which project in the opposite direction. The intermediate crank of said shaft 7 is journaled'in r the projecting end of a bracket S, rigidly secured to one of the sieve-boxes, and the other two cranks are journaled in the projecting ends of a pair of overlying brackets Sa, that are rigidly secured to the other sieve-box. At its upper end the crank 7 is provided with a hollow head 9, that constitutes one member of a swivel-joint and is adapted to serve as an oil-box. The numeral 10 indicates a nonl rotary rod, the upper end of which, as shown,

l is rigidly secured to a keeper 11, rigidly sel cured to the upper floor 2. The lower end of l this rod 10 projects axially into the hollow j head 9 of the shaft 7 and is provided with a ball-engaging head 12, between which and l the upper portion of the head 9 bearing-balls l 13 are interposed. By this means the weight of the crank-shaft 7 is sustained independently of the sieve-boxes, and at the same time the said crank-shaft is free for gyratory or oscillatorymovements. At its lower end the crank-shaft 7 carries a rigidly-secured bevel-gear 14, and loosely journaled on said j crank-shaft and supported by the hub of said r gear 14 is a yoke 15, in the prongs of which one end of a horizontal driving-shaft 16 is jourj naled. This' driving-shaft 16 is provided j with a bevel-gear 17, that meshes with the j bevel-gear 14. The outer end of the drivingshaft 16 is mounted for rotary and for lim- IOO . ited sliding movements in a bearing 1S, l ing the sieve-boxes plumb or in true vertical which beanng is pivotally fixed bearing pedestal 19, shown as rigidly secured to tne lower 'licor 1. At its extreme outer end the driving-shaft 16 is provided with a pulley 20, over which a power-driven tion the yoke l5 is connected to a positions.

Fig. 3 illustrates the manner in which the crank-shaft. 7 may be supported by a device located at its lower end. In this construcprovided with a dependbGll? (not shoWIl) '1S ibdypG/Cl 'D0 1`Lll tO impart ing yoke portion 15a, in which is swiveled a rotary motion to said driving-shaft and from thence to the crank-shaft 7.

The means illustrated in connection with Figs. 1 and 2 for hol ling the sieve-boxes parallel, while permitting them to move in opposite directions-to wit, simultaneously toward and simultane ously from each other-includes a rock-shaft 21, mounted in suitable bearings 22 on one oi the sieve-boxes and provided at or near its ends with depending arms 23 the encs oi witch are connected to tne corresponding end portions oi the other sieve-box by means of links 24. The links 24 at their outer ends are preferably pivotally connected to bearings 25 on the bottom of the said sieve-box 3 and at their inner ends are preferably pivotally connected to coupling-brackets 26, which in turn are pivoted to the lower ends oi the arms 23. It is evident that so far as the rock-shaft, arm, and link connections between the two boxes just described are concerned the said two sieve-boxes are capable of endwise, lateral, or gyratory movements with respect to each other; but under all suchmovements it will be positively held parallel with respect to each other. The crankshaft connections between the two boxes, however, restricts these movements oi the two boxes to gyratory motion, and in coperation with the said parallel motion devices will, when the said crank-shaft is rotated, cause the said two sieve-boxes to make gyratory movements and to alternately move parallel, but simultaneously toward each other and parallel, but simultaneously away from each other. It is oi course evident that if the weight of the two sieve-boxes be equal the forces required to overcome the momentum and inertia oi' the two boxes in e'liecting their reverse gyratory motions will oiiset each other. In view of this fact it is not necessary to provide the crank-shaft with an unbalanced weight to otiset the weight oi the sieve box or boxes, and, iurthermore, the machine when in action will cause but very slight, if any, vibration to the building in which it is installed. ln starting the machine into action and before the si eveboxes have acquired the proper speed of gyration the crank-shaft 7 will gyrate or vibrate slightly, and hence the necessity with the particular construction described oi' mounting the driving-shaft 16 with freedom for both endwise and lateral pivotal motion.

With the construction illustrated in Figs. 1 and 2 the vertical disposition of the cranks oi the crank-shaft 7 and oi the crank-engaging bearing-brackets 8 and 8d caster-wheel 27, that works on a Jface-plate 28, secured on the lower floor 1.

In the construction illustrated in Figs. 4 and 5 a pair of laterally-spaced upright crank-shafts 29 are journaled in a floating frame 30, preferably in the form of a rectangular yoke. This frame may be supported by any suitable means, but as shown is supported at its end portions 'from the upper l 'floor 2 by means of jointed rods or links 31.

, bearing 2 assists in holdl which receive gyratory motion are Each crank-shaft 29 has two cranks, which cranks are oppositely disposed and are pivoted to the outer ends o'l bearings 32, rigidly secured to the inner sides o1c the boxes 3 near their end portions. The crank-engaging which is at one end of the box is higher up than the corresponding bearing member which is at the other end of the box. Otherwise stated, the upper crank oi one oi the crank-shafts is connected to one of the boxes and the lower crank oi' the other crankshaft is connected to that same box. This arrangement oi' cranks and bearings holds the boxes plumb or in vertical positions. The two cranks which are connected to the same box are of course o'llset in the same direction 'from the axis oi the. crank-shalt, so that under rotary movements oi the two crank-shafts the two boxes will be given gyratory motion simultaneously toward each other and simultaneously from each other. At their upper ends the crank-shafts 29 are provided with bevel-gears 33, that mesh with bevel-gears 34 of a counter-shaft 35, which counter-shaft is mounted in suitable bearings 36 on the floating frame 30 and is provided at its outer end with a pulley 37. Motion is imparted to the counter-shaft 35 by a belt 38, which runs over the pulley 37 and over a pulley 39 oi a power-driven counter-shaft 40, which latter is mounted in suitable-bearings 41, shown as secured below the lower floor 1. In this latter-described construction (illustrated in Figs, 4 and 5) it will be noted that the arrangement of the cranks and connections to the sieve-boxes is such that the cranks themselves, while imparting gyratory motion to the sieve-boxes, hold the same always parallel to each other. With this construction also the momentum and inertia oi the two sieve-boxes under gyratory motion oilset or neutralize each other. The belt 38 is oi course suiliciently yielding to permit limited oscillatory or vibratory movements oi the trame 30 when the machine is started into action.v

rlhe statement that the boxes or bodies held par- IOO IIO

ITS

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allel to each other simply means that the said boxes are primarily set with their bodies suspended in predetermined directions with F respect to each other and that that relation is 1 maintained throughout the gyratory movel ments of the boxes. The said boxes or l bodies, so-called sieve-boxes. for convenl ience throughout the specification and claims, y may of course take various forms, and it is not necessary that the same be in all cases 1 true rectangular form. What I claim is j l. The combination with freely-suspended I sieve boxes or bodies, of means connecting said boxes and positively holding the same l parallel to each other, but permitting the 1 said boxes or bodies to move toward and' from each other and each to make its own gyratory motion, inertia of the one box o'tl i setting that of the other, and means ior imarting reverse gyratory movements to said 1 boxes or bodies, involving a freely-suspended 1 power-driven crank-shaft connected to said l boxes or bodies, substantially as described. ,l 2, The combination with a pair of ireely- ,l suspended sieve boxes or bodies, and means 1 'for imparting reverse gyra-tory movements thereto, ot means for holdin T said boxes parallel while permitting their reverse gyratory i movements, comprising a rock-shaft mounte I ed on one ot said boxes and provided with parallel arms, and links connecting said arms to the other boxes, substantially as described.

3. rThe combination with a pair of freely suspended sieve boxes or bodies, o1c a rockshatt mounted on one of said boxes and provided with parallel arms, links connecting said arms to the other box, and a freely-suspended power-driven crank-shatt having reversely-extended cranks connectedA to said two boxes, substantially as described.

4. The combination with a pair of freely suspended sieve boxes or bodies, of a rockshaft mounted on one of said boxes and provided with parallel arms, links connecting said arms to the two boxes, a freely-suspended crank-shaft located between said boxes and provided with reversely-pro ecting cranks connected to said two boxes, a power-driven counter-shaft mounted 'l'or 'freedom for limited endwise and oscillatory movements in a substantially horizontal plane, and gears connecting said counter-shaft to said crankshaft, substantially as described.

In testimony whereof l ailix my signature in presence ot two witnesses.

EMIL R. DRAVER. 1Witnesses:

EVERETT R. LEMON, F. N. Druivnn. 

